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QUESTION 3 In a certain region, the mean annual salary for plumbers is $51,000. Let x...

QUESTION 3

  1. In a certain region, the mean annual salary for plumbers is $51,000. Let x be a random variable that represents a plumber's salary. Assume the standard deviation is $1300. If a random sample of 100 plumbers is selected, what is the probability that the sample mean is greater than $51,300?

    A.

    0.32
    B.

    0.03
    C.

    0.41
    D.

    0.01
Math   Statistics-And-Probability   
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